I think I've fallen in love with a student in my class, is it normal to sing more love songs at home?

I'm a 17 year old male, and I've fallen in love with a female in one of my classes. She's beautiful, and I think she likes me too as she started talking to me often online, but she gets shy in real life, and starts twirling her hair. I am pretty sure that we both share the same feelings, but I'm just curious, is it normal to sing Bruno Mars songs all day at home? Serious question, cause that's all I've been doing, and I'm just happy :)